RT Journal Article T1 Internal fundamental sequences and approximative retracts A1 Laguna, V. F. A1 Rodríguez Sanjurjo, José Manuel AB We introduce the notion of internal fundamental sequence and prove that any shape morphism from an arbitrary compactum X to an internally movable compactum Y is induced by an internal fundamental sequence. We use this special kind of fundamental sequences to give characterizations and some properties of AANRc-sets and AANR,-sets. The paper ends with a section devoted to internal FANR’s. PB Elsevier Science SN 0166-8641 YR 1984 FD 1984 LK https://hdl.handle.net/20.500.14352/64694 UL https://hdl.handle.net/20.500.14352/64694 LA eng DS Docta Complutense RD 17 abr 2025